We recently replaced a proprietary API management solution with an in-house implementation built with NGINX and Lua that let us get to a continuous delivery practice in a handful of months. Learn about our development process and the overall architecture that allowed us to write minimal amounts of code, enjoying native code performance while permitting interactive coding, and how we leveraged other open source tools like Vagrant, Ansible, and OpenStack to build an automation-rich delivery pipeline. We will also take an in-depth look at our capacity management approach that differs from the rate limiting concept prevalent in the API community.